The impact of chronic pain on direct medical utilization and costs in chronic obstructive pulmonary disease

Co-prescribing of Central Nervous System-Active Medications for COPD Patients: Impact on Emergency Room Visits and Hospitalization

BACKGROUND

Anxiety and chronic pain are common comorbidities in patients with chronic obstructive pulmonary disease (COPD), which are frequently managed with benzodiazepines (BZDs) and opioids, respectively.

OBJECTIVE

The purpose of this study was to determine whether different combinations of opioids, BZD, and their substitutes-gabapentinoids (GABA) and selective serotonin reuptake inhibitors/serotonin-norepinephrine reuptake inhibitors (SSRIs/SNRIs)-are associated with lower risk of acute respiratory events in COPD patients with co-occurring chronic pain and anxiety.

METHODS

This retrospective cohort study used a nationally representative sample of Medicare beneficiaries with COPD, chronic pain, and anxiety. Patients were grouped based on drug combination (opioid + BZD/Z-hypnotics, opioid + GABA, opioid + SSRI/SNRI, BZD/Z-hypnotics + GABA, BZD/Z-hypnotics + SSRI/SNRI, GABA + SSRI/SNRI, or ≥3 drugs). The primary outcome was emergency room (ER) visit or hospitalization due to acute respiratory events assessed up to 180 days following initiation of drug combination. Overdose secondary to central nervous system (CNS)-related drugs was also assessed up to 180 days following initiation of drug combination.

RESULTS

The drug combination opioid + GABA was associated with decreased risk for ER visit (hazard ratio [HR] = 0.73; 95% CI = 0.61-0.87) and hospitalization (HR = 0.69; 95% CI = 0.55-0.85). Opioid + SSRI/SNRI also showed decreased risk for ER visit (HR = 0.84; 95% CI = 0.71-0.99). There was no significant difference in risk for CNS-related drug overdose among different drug combinations compared with opioid + BZD/Z-hypnotics.

CONCLUSION AND RELEVANCE

Opioids in combination with GABA and SSRI/SNRI demonstrate relatively lower risk for acute respiratory events among patients with COPD and comorbid chronic pain and anxiety. The findings emphasize the need for multimodal management in this vulnerable population.

Association of chronic pain with comorbidities and health care utilization: a retrospective cohort study using health administrative data

ABSTRACT

Health administrative data provide a potentially robust information source regarding the substantial burden chronic pain exerts on individuals and the health care system. This study aimed to use health administrative data to estimate comorbidity prevalence and annual health care utilization associated with chronic pain in Newfoundland and Labrador, Canada. Applying the validated Chronic Pain Algorithm to provincial Fee-for-Service Physician Claims File data (1999-2009) established the Chronic Pain (n = 184,580) and No Chronic Pain (n = 320,113) comparator groups. Applying the Canadian Chronic Disease Surveillance System coding algorithms to Claims File and Provincial Discharge Abstract Data (1999-2009) determined the prevalence of 16 comorbidities. The 2009/2010 risk and person-year rate of physician and diagnostic imaging visits and hospital admissions were calculated and adjusted using the robust Poisson model with log link function (risks) and negative binomial model (rates). Results indicated a significantly higher prevalence of all comorbidities and up to 4 times the odds of multimorbidity in the Chronic Pain Group (P-value < 0.001). Chronic Pain Group members accounted for 58.8% of all physician visits, 57.6% of all diagnostic imaging visits, and 54.2% of all hospital admissions in 2009/2010, but only 12% to 16% of these were for pain-related conditions as per recorded diagnostic codes. The Chronic Pain Group had significantly higher rates of physician visits and high-cost hospital admission/diagnostic imaging visits (P-value < 0.001) when adjusted for demographics and comorbidities. Observations made using this methodology supported that people identified as having chronic pain have higher prevalence of comorbidities and use significantly more publicly funded health services.

Prevalence and risk factors of musculoskeletal pain in patients with chronic obstructive pulmonary disease: A systematic review

OBJECTIVES

This systematic review aimed to discuss the prevalence and the risk factors of the musculoskeletal pain in chronic obstructive pulmonary disease (COPD).

DATA SOURCE AND STUDY SELECTION

Four databases were analysed (Scopus, PubMed, Cochrane and EMBASE). We excluded systematic reviews, meta-analyses, conference abstracts and case reports. Two authors independently checked for the eligibility of the relevant articles. The risk of bias was evaluated using the Newcastle Ottawa Quality Assessment Scale and the Joanna Briggs Institute critical appraisal checklist. The selection and evaluation of studies followed the PRISMA guidelines.

RESULTS

Twenty studies were retrieved, including from 21 to 7952 patients with COPD. The prevalence of pain was highly heterogeneous across studies: 7-89.7%. Pain was mostly reported in the lumbar (7-69%) and cervical spine (11-48.3%) and the chest (44-82.8%). The main risk factors for developing pain were old age, sex (female), level of physical activity (low) and comorbidities.

CONCLUSION

Pain is a very common symptom in patients with COPD. Despite this, few clinical trials have investigated the pain. It appears to be located primarily in the lumbar, cervical and thoracic regions and facilitated by being a female, a low level of physical activity, comorbidity(ies) and old age.

Pain in Veterans with COPD: relationship with physical activity and exercise capacity

BACKGROUND

Pain is a common but underappreciated symptom experienced by people with Chronic Obstructive Pulmonary Disease (COPD). The relationships between pain and physical activity (PA) and exercise capacity are poorly understood.

METHODS

This retrospective secondary analysis includes three cohorts of Veterans with COPD who participated in longitudinal studies evaluating PA and exercise capacity with objective measures of daily step counts and 6-min walk test (6MWT) distance, respectively. Pain was assessed using the bodily pain domain of the Veterans RAND-36. In two cohorts, participants were randomly assigned to a web-based, pedometer-mediated PA intervention which has previously been demonstrated to improve PA.

RESULTS

Three-hundred and seventy-three (373) unique study participants were included in this analysis. Eighty-three percent (n = 311) of the population reported at least mild pain and/or at least a little bit of interference due to pain at baseline. Cross-sectionally, greater bodily pain was associated with lower 6MWT distance (β = 0.51; 95% CI 0.20, 0.82; p = 0.0013). Longitudinally, worsening bodily pain was associated with a decline in 6MWT distance (β = 0.30; 95% CI 0.03, 0.58; p = 0.0312). There was no association between baseline bodily pain and baseline daily step counts, baseline bodily pain and change in PA, or change in bodily pain and change in PA. Compared to usual care, our PA intervention improved bodily pain scores (β = 6.17; 95% CI 1.84, 10.45; p = 0.0054). Bodily pain scores did not affect the impact of the intervention on daily step counts.

CONCLUSION

Pain is highly prevalent and significantly associated with lower exercise capacity among Veterans with COPD. Worsening pain co-occurred with decline in exercise capacity but not PA. Our intervention reduced pain, although pain did not affect the impact of the intervention on PA.

COPD is Associated with Higher Prevalence of Back Pain: Results of a Population-Based Case-Control Study, 2017

Objective

We aimed to assess whether patients suffering from COPD have a higher prevalence of chronic back pain (neck and low back pain) than age-, sex-, and residence-matched non-COPD controls. We also aimed to identify which variables are associated with chronic neck pain (CNP) and chronic low back pain (CLBP) among COPD patients.

Methods

We carried out a retrospective case-control study using data obtained from the Spanish National Health Survey conducted in 2017.

Results

We analyzed data from 1034 COPD and 1034 matched non-COPD controls. The prevalence of CNP and CLBP was 38.20% and 45.16%, respectively, among COPD patients and 22.82% and 28.34% for non-COPD controls, respectively (p<0.001 for both). Multivariable analysis showed that COPD patients had a 1.62-fold (95% CI 1.50-1.74) higher risk of CNP and a 1.83-fold (95% CI 1.73-1.91) higher risk of CLBP than non-COPD controls. Experiencing one type of pain greatly increased the risk of having the other. Factors associated with the presence of both types of pain among COPD patients included female sex, "fair/poor/very poor" self-rated health, migraine or frequent headache and use of pain medication. Being aged from 70 to 79 years was a risk factor for CLBP, and suffering from a mental disorder was a risk factor for CNP.

Conclusion

The prevalence of CNP and CLBP was significantly higher among COPD patients than among non-COPD controls after adjusting for age, sex and other relevant clinical variables. Our findings add new data to the knowledge of chronic pain in COPD patients.

[Management of patients with chronic pain in acute and perioperative medicine : An interdisciplinary challenge]

Chronic pain is a frequent comorbidity of patients in hospitals and has an influence on the clinical course and the duration of hospitalization. There is a need to have a better understanding of chronic pain as a comorbidity and it should be considered to a greater extent in understanding diseases, in treatment concepts and hospital structures to ensure a resource-oriented and high-quality care. This begins on admission by identifying pre-existing pain and related risk factors with the medical history and taking these into account in the treatment regimen. A multimodal treatment approach that involves medicinal, educational, psychological and physiotherapeutic expertise is required in these patients. A unimodal approach in the treatment is not effective. A pain physician should be involved in the treatment team as early as possible. Furthermore, psychological joint supervision should be available for these patients as several studies have demonstrated positive perioperative effects of psychological approaches on the treatment in this patient group.

Prevalence of Pain in COPD Patients and Associated Factors: Report From a Population-based Study

OBJECTIVES

To assess the prevalence of chronic neck pain (CNP), chronic low back pain (CLBP), and migraine among Spanish adults with chronic obstructive pulmonary disease (COPD) compared with non-COPD patients matched by age and sex; and to identify predictors for each of these types of pains among COPD sufferers.

MATERIALS AND METHODS

A cross-sectional study conducted with data collected from the European Health Interview Surveys for Spain (EHSS) conducted in years 2009/2010 (n=22,188) and 2014 (n=22,842). Data were analyzed using multivariable logistic models.

RESULTS

The prevalence of COPD among patients aged 35 years or above were 7.6% (n=1328) for the EHSS 2009 and 5.4% (n=1008) for the EHSS 2014. We matched 2251 COPD patients with age and sex controls. The prevalence of all types of pain were significantly higher among those suffering COPD than those without COPD. For CNP the figures were 40.5% versus 26.1%, for CLBP 44.8% versus 28.4%, and for migraine 22.5% versus 13.2%. Multivariable analysis showed that COPD was associated to a 1.21 (95% confidence interval [CI], 1.02-1.45) higher risk of CNP, 1.38 (95% CI, 1.16-1.64) of CLBP, and 1.36 (95% CI, 1.12-1.65) of migraine. Associated factors with the presence of these types of pain among COPD patients included younger age (not for CLBP), female sex (not for CLBP), "fair/poor/very poor" self-rated health (not for migraine), high blood pressure (not for CNP), mental disorders, obesity (not for migraine), and use of pain medication.

DISCUSSION

The prevalence of CNP, CLBP, and migraine was significantly higher among COPD patients in comparison with controls. Associated factors to suffering these types of pain in patients with COPD included age, sex, self-rated health, certain comorbidities including mental disorders, obesity, and using pain medication.

Systematic Review of Pain in Clinical Practice Guidelines for Management of COPD: A Case for Including Chronic Pain?

Chronic pain is highly prevalent and more common in people with chronic obstructive pulmonary disease (COPD) than people of similar age/sex in the general population. This systematic review aimed to describe how frequently and in which contexts pain is considered in the clinical practice guidelines (CPGs) for the broad management of COPD. Databases (Medline, Scopus, CiNAHL, EMbase, and clinical guideline) and websites were searched to identify current versions of COPD CPGs published in any language since 2006. Data on the frequency, context, and specific recommendations or strategies for the assessment or management of pain were extracted, collated, and reported descriptively. Of the 41 CPGs (English n = 20) reviewed, 16 (39%) did not mention pain. Within the remaining 25 CPGs, pain was mentioned 67 times (ranging from 1 to 10 mentions in a single CPG). The most frequent contexts for mentioning pain were as a potential side effect of specific pharmacotherapies (22 mentions in 13 CPGs), as part of differential diagnosis (14 mentions in 10 CPGs), and end of life or palliative care management (7 mentions in 6 CPGs). In people with COPD, chronic pain is common; adversely impacts quality of life, mood, breathlessness, and participation in activities of daily living; and warrants consideration within CPGs for COPD.

Chronic Inguinal Pain After Kidney Transplantation, a Common and Underexposed Problem

BACKGROUND

The incidence and impact of chronic inguinal pain after kidney transplantation is not clearly established. A high incidence of pain after inguinal hernia repair, a comparable surgical procedure, suggests an underexposed problem.

METHODS

Between 2011 and 2013, 403 consecutive patients who underwent kidney transplantation were invited to complete the Caroline Comfort Scale (CCS) and Visual Analog Scale (VAS) in order to assess the incidence of chronic inguinal pain and movement disabilities, complemented by questions regarding comorbidity during follow-up.

RESULTS

The response rate was 58 % (n = 199) with a median follow-up of 22 months (IQR 12-30). In total, 90 patients (45 %) reported a CCS > 0 and 64 patients (32 %) experienced at least mild but bothersome complaints. Most inguinal complaints were reported during bending over and walking with a mean CCS score of 1.1 (SD ± 2.2) and 1.2 (SD ± 2.4), respectively. A high body mass index (BMI), delayed graft function, and the need for a second operation were associated with a higher CCS score on univariate analysis. Using multivariate analysis, only BMI (p = 0.02) was considered an independent risk factor for chronic inguinal pain.

CONCLUSIONS

The incidence of chronic inguinal pain is a common though underexposed complication after kidney transplantation. More awareness to prevent neuropathic pain seems indicated.

Prevalence and associated factors of anxiety and depression among patients with chronic respiratory diseases in eight general hospitals in Jiangsu Province of China: A cross-sectional study

Anxiety and depression are two common psychological disorders with high morbidity worldwide. Understanding of their prevalence of patients with chronic respiratory diseases is becoming more and more important for clinicians. The current study aims at investigation of the prevalence and potential risk factors of anxiety and depression among patients with chronic respiratory diseases. The psychological status, anxiety and depression, and the relevant risk factors of 1713 patients with chronic respiratory diseases from 8 general hospitals in Jiangsu Province of China were evaluated. The results showed that the patients with chronic respiratory diseases experiencing depression and anxiety accounted for 46.00% and 25.34%, respectively. Multivariate logistic regression analysis revealed that lower body mass index (BMI), sleep disorders, limitation of physical activity, and negative life events were significantly associated with an increased risk of both depressive and anxiety symptoms. Poor marital status including divorce, separation and widowerhood was markedly correlated with an increased risk of depression, and chronic pain was with anxiety symptoms, respectively. Collectively, the data demonstrated that depression and anxiety were highly prevalent among the patients with chronic respiratory diseases. It is greatly significant to take specific psychological measures to lower the incidence of depression and anxiety in these patients.

Efficacy and safety of tiotropium + olodaterol maintenance treatment in patients with COPD in the TONADO® and OTEMTO® studies: a subgroup analysis by age

Background

Increasing age is associated with poor prognosis in patients with COPD.

Objective

This analysis from the replicate Phase III OTEMTO^® and TONADO^® studies examined the efficacy and safety of tiotropium, a long-acting anticholinergic, combined with olodaterol, a long-acting β₂-agonist, compared to monotherapies and placebo in patients with COPD aged 40 years to <65 years, 65 years to <75 years, 75 years to <85 years, and ≥85 years.

Methods

In these double-blind, parallel-group, active-controlled, multicenter, randomized studies, patients received tiotropium + olodaterol 2.5/5 μg or 5/5 μg, tiotropium 5 μg or 2.5 μg (TONADO only), olodaterol 5 μg (TONADO only), or placebo (OTEMTO only). This analysis used the approved doses of tiotropium + olodaterol 5/5 μg, tiotropium 5 μg, and olodaterol 5 μg. Primary end points at 12 weeks (OTEMTO) or 24 weeks (TONADO) included St George’s Respiratory Questionnaire (SGRQ) total score, forced expiratory volume in 1 second (FEV₁) area under the curve from 0 hour to 3 hours (AUC_0–3) response, and trough FEV₁ response.

Results

A total of 1,621 patients were randomized (40 years to <65 years, n=749; 65 years to <75 years, n=674; 75 years to <85 years, n=186; ≥85 years, n=12) in OTEMTO and 5,162 patients (40 years to <65 years, n=2,654; 65 years to <75 years, n=1,967; 75 to <85 years, n=528; ≥85 years, n=13) in TONADO. FEV₁ AUC_0–3 and trough FEV₁ responses improved with tiotropium + olodaterol 5/5 μg at 12 weeks and 24 weeks compared to monotherapies or placebo for all age groups. SGRQ scores generally improved with tiotropium + olodaterol 5/5 μg after 12 weeks in OTEMTO and improved after 24 weeks in all age groups in TONADO. In all age groups receiving tiotropium + olodaterol 5/5 μg compared to monotherapies or placebo, transition dyspnea index scores generally improved, while rescue medication usage improved.

Conclusion

No differences were noted in relative responses to treatment or safety when using tiotropium + olodaterol 5/5 μg compared to monotherapies or placebo across all age groups.